I took the Vitex 200:1 LJ. It's a good natural test booster. One of my favorites, actually. It's also widely used in PCT for ball size, since it causes tissue swelling in the testicles.
It's great for libido. I never had ANY nasty sides from it, but I took alot of t booster before it. I took it with 3.12g of DAA, and some 90%Saponins Trib and my libido/Endurance was insane son.
Good call on getting the 200:1. Most people don't dig that deep to get the standardization.